IEEEExtreme Programming

Hi ranchers, in view of a programming contest coming up on the 20th of october 2012, i'll like you guys to put up some words for me, i mean how does an online programming contest looks like and what are the things i should read more since i'll code in Java. This is a link to some sample problems i've not been able to get through and OMG its next week! Any advice would be appreciated and thank you in advance.